What is Rotary Table ?

What is a CNC Rotary Table?

A CNC rotary table (also called a rotary indexing table) is a precision accessory used in CNC machines that allows a workpiece to rotate at specific angles with high accuracy. Rotary tables play a critical role in the machining of complex geometric parts and are indispensable in modern production lines.

By integrating rotary tables into machining centers, it becomes possible to reach all surfaces of a workpiece in a single setup. This saves time and increases machining accuracy while minimizing errors that could occur with multiple setups in traditional methods.

Types of CNC Rotary Tables

1. Standard Rotary Table

The most common type, providing 360° rotation around a single axis (usually the A-axis). Ideal for machining cylindrical parts, hole patterns, and circular grooves.

Applications:

• Cylindrical part machining

• Hole pattern creation

• Circular slot milling

• Thread cutting operations

2. Tilting Rotary Table

Has two-axis movement capability — rotation on both horizontal (A) and vertical (B) axes. Enables true 5-axis machining for complex parts.

Advantages:

• 5-axis machining capability

• Complex angled surface machining

• Complete machining in one setup

• High precision

3. Indexing Table (Divisor)

Also known as a CNC divisor, this type stops at fixed angle intervals, allowing the workpiece to be processed in precise steps. Commonly used for repetitive drilling and milling operations.

4. CNC Divisor

Designed for ultra-precise angular indexing operations. Used for gear cutting, multi-faceted part production, and symmetrical hole pattern machining.

Technical Features

Modern CNC rotary tables typically feature:

• Accuracy: ±3 arc seconds (~0.0008°)

• Repeatability: ±1 arc second

• Load Capacity: 50 kg – 2000 kg

• Rotation Speed: 0–100 rpm

• Motor Type: Servo or torque motor

Advantages of Using a CNC Rotary Table

• Multi-face machining in a single setup

• Up to 60% reduction in production time

• Lower labor costs

• Reduced error rates

• High repeatability and precision

• Accurate machining of complex geometries

Conclusion

Investing in a CNC rotary table is an essential step for any company engaged in serial or precision manufacturing.

Choosing the right type and specification significantly improves production efficiency.

At Gürhan Işık Makina, we are ready to provide you with the most suitable rotary table solutions tailored to your industrial needs.